{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["application", "machine or equipment", "material", "concept or principle", "biomedical", "engineering feature"], "input": "The formation mechanism of different types of internal defects is proposed based on the experimental observations ."}
{"application": [], "machine or equipment": [], "material": [], "concept or principle": ["mechanism", "defects", "experimental"], "biomedical": [], "engineering feature": []}